My processor specs Intel Core 2 Quad Q9400 ( 2.66GHz, 1333MHz, 45nm, 6MB L2 Cache Total)
And of course Asus striker II extreme
When i assembled and pressed the power on button for the first time I also had some issues.. and he couldnt recognise my quad core..
Entered the asus website and downloaded then the newest bios - 1104, placed the bios on flash and updated with EZ Flash 2 and now running all ok!
So i guess it supports the quadcore and 45nm teh... just with newer bios.. not on stock bios..
Will update the bios to newest revision 1402 soon and will see what happens then